I have a 2004 X5 4.4i engine.
Can I just change the oil filter and not lose all
the oil?
Oil filters are inexpensive. 9 quarts of Mobil 1, not-so-much.

On my 528 wagon M54, it's easy.

I like to do an interim oil filter change halfway through the OCI.
Always install new filter, just like to see if it's dirty or not.
If it's worse than expected, I do an oil change then.

Thank you.

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2003 4.6is X5
2003 525it
2003 E53 X5 Standard shift